Thank you for this video. Your explanation was really useful!

Thanks this was very helpful!

Thank you so much for your explanation. it's really helpful.

Why does the data that comes from a population with normal distribution and homogeneity of variance use the Welch test? In the code it should go like this: t.test (length ~ sex, data= data, var.equal = TRUE). Otherwise it would be generating a default code: t.test (length ~ sex, data= data, var.equal = FALSE).

VERY HELPFUL

Value for confidence Interval

How to interpretate the "t value", "df" ?